APA aipamena

Smith, D. L. (1990). International research centers directory, 1990-91. Gale Research Inc.

Chicago Style aipamena

Smith, Darren L. International Research Centers Directory, 1990-91. Detroit: Gale Research Inc, 1990.

MLA aipamena

Smith, Darren L. International Research Centers Directory, 1990-91. Gale Research Inc, 1990.